public class ConcreteCarBmw extends CarBuilder {
    @Override
    public void buildCarengine() {
        car.setEngine("3.0L V8 引擎");
    }

    @Override
    public void buildCarseat() {
        car.setSeat("真皮坐椅");
    }

    @Override
    public void buildtyre() {
        car.setTyre("米其林轮胎");
    }
}
